body {
  background-color: #f8f8f8;
}
.contentWrapper {
  width: 1136px;
  overflow: hidden;
  margin: 54px auto 0;
}

.contentWrapper img {
  max-width: 100%;
  height: auto;
}
.downLoadBtn {
  display: block;
  width: 238px;
  height: 72px;
  line-height: 72px;
  color: #fff;
  border-radius: 10px;
  text-align: left;
  background: #515151 url('../image/windows-btn.png') 25px no-repeat;
  background-size: 33px 33px;
  text-indent: 80px;
  font-size: 20px;
  cursor: pointer;
  margin-bottom: 30px;
}

.downLoadBtn:last-child {
  margin: 0;
}

.downLoadBtn.windows {
  background: #515151 url('../image/windows-btn.png') 25px no-repeat;
  background-size: 33px 33px;
}

.downLoadBtn.android {
  background: #515151 url('../image/android-btn.png') 25px no-repeat;
  background-size: 32px 39px;
}

.downLoadBtn.apple {
  background: #515151 url('../image/apple-btn.png') 25px no-repeat;
  background-size: 28px 34px;
}

.downLoadBtn:hover {
  background-color: #696969;
}

.bannerWrapper {
  width: 100%;
  //background-color: #1b1b1b;
}

.mainBanner {
  //width: 1440px;
  //height: 600px;
  position: relative;
  margin: 0 auto;
}

.infoWrapper {
  position: absolute;
  bottom: 60px;
  left: 176px;
}

.mainBanner .imgWrapper img {
  width: 100%;
  max-width: 1920px;
  min-width: 1440px;
  height: auto;
  margin: 0 auto;
  display: none;
}

.mainBanner .infoWrapper p.cur {
  font-weight: bold;
  color: #fff;
  position: relative;
}

.mainBanner .infoWrapper p.cur::before {
  content: '';
  background: url("../image/icon-box.png") left center no-repeat;
  background-size: 12px 13px;
  width: 12px;
  height: 30px;
  display: block;
  position: absolute;
  left: -22px;
  top: 0;
}

.mainBanner .infoWrapper p {
  cursor: pointer;
  line-height: 30px;
  color: #909090;

  font-size: 14px
}

.mainBanner .p2 {
}

.mainBanner .p3 {
  color: #fff;
  font-size: 14px
}

.product {
  text-align: center;
}

.product .p1 p {
  line-height: 30px;
  font-size: 14px;
  color: #595959;
}

.product .p1 p:first-child {
  padding: 50px 0 10px 0;
  font-size: 24px;
  color: #333;
}

.product .p1 .video-js {
  margin: 30px auto;
}

.vjs-big-play-button {
  font-size: 50px !important;
}

.product .item img {
  width: 1440px;
  min-width: 1440px;
  height: auto;
  margin: 0 auto;
}

.product .item.p2 {
  background: #fff;
  height: auto;

}

.product .item.p3 {
  background: #f8f8f8;
  height: auto;

}

.product .item.p4 {
  background: #fff;
  height: auto;

}

.product .item {
  background-color: #f8f8f8;
  height: 600px;
  position: relative;
}

.successCase {
  position: relative;
  text-align: center;
  height: 455px;
  margin: 0 auto;
  width: 1440px;
  background-color: #f8f8f8;
}

.successCase p {
  color: #595959;
  font-size: 14px;
  line-height: 30px;
}

.successCase p:first-child {
  padding: 50px 0 10px 0;
  color: #333;
  font-size: 24px;
}

.successCase ul {
  left: 0;
  bottom: 0;
  position: absolute;
}

.successCase ul li {
  float: left;
  width: 288px;
  height: 288px;
  position: relative;

  background-color: yellow;
}

.successCase ul li em {
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, .5);
  color: #fff;
  font-size: 18px;
  line-height: 288px;
}

.successCase .btn-more {
  position: absolute;
  box-shadow: 0 0 5px #ddd;
  background-color: #fff;
  left: 50%;
  margin-left: -62.5px;
  bottom: -22.5px;
  width: 125px;
  height: 45px;
  border-radius: 30px;
  line-height: 45px;
  color: #333;
  font-size: 14px;
}

.partner {
  text-align: center;
  padding-bottom: 65px;
}
.partner .logoWrapper {
  margin-top: 30px;
}
.partner .item {
  font-size: 16px;
  color: #333;
}
.partner .item ul {
  margin: 20px auto 0 auto;
}
.partner .item ul li {
  float: left;
  width: 200px;
  margin-right: 15px;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
}
.partner .school.item ul li {
  width: 160px;
  margin-right: 20px;
}
.partner .institutions.item ul li:nth-child(5n) {
  margin-right: 0;
}
.partner .school.item ul li:nth-child(6n) {
  margin-right: 0;
}

.partner .item ul li img {
  width: auto;
  height: auto;
  max-width: 100%;
  max-height: 100%;
  margin: 0 auto;
}
.partner p {
  color: #595959;
  font-size: 14px;
  line-height: 30px;
}
.partner p:first-child {
  padding: 50px 0 10px 0;
  color: #333;
  font-size: 24px;
}
.partner .btn-more {
  background-color: #fff;
  border: 1px solid #c2c2c2;
  width: 125px;
  height: 45px;
  border-radius: 30px;
  line-height: 45px;
  color: #333;
  font-size: 14px;
  display: inline-block;
}
.clearFix:after {
  content: '';
  display: block;
  clear: both;
  height: 0;
}

.clearFix {
  zoom: 1;
}